The trial of Jerry Sandusky has begun. Prosecutors accuse the former Penn State assistant football coach of abusing at least 10 boys, allegations that have become widely known.

What may be less familiar is a mental illness his lawyers are connecting with him: Histrionic personality disorder. The defense attorneys say they intend to offer expert testimony from a psychologist who "will explain that the words, tones, requests and statements made in the letters are consistent with a person who suffers from a Histrionic Personality Disorder," according to documents.

Histrionic personality disorder is part of a class of conditions called dramatic personality disorders, which are marked by unstable emotions and distorted self-images, according to the Cleveland Clinic.

If you're one of the estimated 27 million Americans with osteoarthritis, you're probably all too familiar with the feeling of aching, swollen, or stiff knees.

Nonsteroidal anti-inflammatory drugs such as ibuprofen may relieve those painful symptoms in most patients. But for others, doctors may prescribe a more invasive treatment that involves injecting hyaluronic acid in to the knee, called viscosupplementation.

Now, a new report questions the efficacy of this treatment for osteoarthritis in the knee.

Hyaluronic acid is a lubricating fluid that is naturally found in the knee, but degenerates over time in people with osteoarthritis. The effect of the injection used in viscosupplementation is to stimulate cells in the knee to increase production of hyaluronic acid.FULL POST

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